Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/11938#discussion_r57456787
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
---
@@ -31,17 +32,34 @@ import
org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, SubqueryAlias}
* proxy to the underlying metastore (e.g. Hive Metastore) and it also
manages temporary
* tables and functions of the Spark Session that it belongs to.
*/
-class SessionCatalog(externalCatalog: ExternalCatalog) {
+class SessionCatalog(externalCatalog: ExternalCatalog, conf: CatalystConf)
{
import ExternalCatalog._
- private[this] val tempTables = new ConcurrentHashMap[String, LogicalPlan]
- private[this] val tempFunctions = new ConcurrentHashMap[String,
CatalogFunction]
+ def this(externalCatalog: ExternalCatalog) {
+ this(externalCatalog, new SimpleCatalystConf(true))
+ }
+
+ protected[this] val tempTables = new ConcurrentHashMap[String,
LogicalPlan]
+ protected[this] val tempFunctions = new ConcurrentHashMap[String,
CatalogFunction]
// Note: we track current database here because certain operations do
not explicitly
// specify the database (e.g. DROP TABLE my_table). In these cases we
must first
// check whether the temporary table or function exists, then, if not,
operate on
// the corresponding item in the current database.
- private[this] var currentDb = "default"
+ protected[this] var currentDb = {
+ val defaultName = "default"
+ val defaultDbDefinition = CatalogDatabase(defaultName, "default
database", "", Map())
--- End diff --
In the `HiveSessionCatalog`, we can get the default path by:
```
override def getDefaultPath: String =
client.getConf(HiveConf.ConfVars.METASTOREWAREHOUSE.varname,
HiveConf.ConfVars.METASTOREWAREHOUSE.defaultStrVal)
```
It might not be useful in this case. I am just trying to implement the
`CreateDatabase` DDL.
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